8013840000

FAQFrequently Asked Questions

• Can the Weidmüller 8013840000 terminal block handle both 12 AWG and 26 AWG wire in the same connector without rework? Yes, the Weidmüller 8013840000 accepts wire gauges from 12 to 26 AWG (0.5–4 mm²) across all four positions. Each screw terminal can accommodate this full range, allowing mixed gauges within a single connector. However, you must ensure each wire is stripped to the specified 10 mm length and inserted fully into the terminal before tightening the screw. Mixing gauges does not require mechanical rework, but verify that your application's current distribution across positions does not exceed individual terminal current ratings, as smaller gauges like 26 AWG carry less current than 12 AWG.
• What is the disconnect mechanism on the Weidmüller 8013840000, and does it allow hot-disconnection without tools? The Weidmüller 8013840000 is a screw-terminal disconnect block with a -type disconnect (specific disconnect mode not specified in standard catalogs). The terminal block requires a screwdriver to loosen the screw terminals for wire removal or insertion; there is no tool-free, push-button disconnect feature. If your application requires rapid, frequent disconnection cycles without tools, you may need to evaluate alternative connector types such as push-wire or lever-actuated disconnects instead of the 8013840000.
• Is the Weidmüller 8013840000 suitable for indoor industrial control cabinets with high humidity or occasional condensation? The Weidmüller 8013840000 is rated at Moisture Sensitivity Level (MSL) 1 (Unlimited), meaning it can tolerate unlimited exposure to high humidity without degradation. The thermoplastic Wemid insulation material and UL94 V-0 flammability rating provide robust performance in damp industrial environments. However, ensure the 10 mm wire stripping length is maintained and no bare conductor is exposed beyond the terminal entry point, as moisture can accumulate at the wire–terminal interface if improper stripping or insertion occurs. For long-term outdoor or wash-down environments, consider potting or conformal coating around the connector if condensation is severe.
• Can I use the Weidmüller 8013840000 as a replacement for older Phoenix Contact MKDS series terminal blocks in a legacy 24 VDC control circuit? Physical and electrical compatibility must be verified before direct replacement. The Weidmüller 8013840000 has 4 positions with 5.1 mm terminal width, whereas older Phoenix Contact MKDS blocks often have different pitch and terminal geometry. Voltage specifications for the 8013840000 are not listed (marked as '-' for IEC and UL ratings), so you must consult the manufacturer's full datasheet to confirm the maximum working voltage. If your legacy circuit operates at 24 VDC and the footprint dimensions differ, PCB rework or custom adapter plates may be required. Cross-reference the mechanical drawing and electrical ratings before committing to the replacement.
• What wire stripping and insertion procedure minimizes resistance and connection reliability issues in the Weidmüller 8013840000? The Weidmüller 8013840000 requires exactly 10 mm of bare conductor stripping. Remove no more insulation than specified, as excess bare wire may short to adjacent terminals or degrade the connection through oxidation. Insert the stripped wire fully into the terminal opening until it seats against the back of the terminal cavity, then tighten the screw firmly in a single clockwise motion—do not over-torque, as excessive force can deform the wire or damage the screw thread. For critical applications, apply a small amount of dielectric grease to the wire before insertion to reduce corrosion at the contact interface. Verify connection quality by gently tugging the wire; if it moves, the screw was not sufficiently tightened.
• Does the Weidmüller 8013840000 support daisy-chain or cascading configurations in multi-level industrial networks? The Weidmüller 8013840000 has 2 levels of connectivity (as indicated by 'Number of Levels: 2'), which allows stacking or cascading of multiple blocks in modular industrial systems. However, verify that the cascade connections are electrically isolated or bonded according to your system design—if isolation is required between levels, do not assume the 8013840000 provides inherent isolation. Each level's 4 positions must be managed independently to avoid cross-talk or unintended current paths. Consult the specific application schematic to ensure daisy-chaining does not exceed the voltage or current limits of intermediate connections.
• How does the UL94 V-0 rating of the Weidmüller 8013840000 insulation affect its use in high-temperature environments or near heat-generating components? The UL94 V-0 flammability rating indicates the thermoplastic Wemid insulation material is self-extinguishing and meets strict flame-spread criteria under laboratory conditions. However, UL94 V-0 does not specify a continuous operating temperature range; temperature limits are determined by the material's glass-transition temperature and thermal deformation point, which are not provided in this datasheet. In applications where the Weidmüller 8013840000 will operate near heat sources (e.g., adjacent to motor windings, power resistors, or enclosed cabinets), request the full thermal specifications from Weidmüller to confirm safe operating temperature. If the application exceeds typical industrial ranges (50–70 °C), consider alternative materials or thermal management measures.
• What are the RoHS and REACH compliance implications if I need to integrate the Weidmüller 8013840000 into a medical device or aerospace application? The Weidmüller 8013840000 is RoHS Compliant and REACH Unaffected, indicating it meets European restriction directives for hazardous substances. However, RoHS and REACH compliance does not qualify the component for medical or aerospace use; those industries have additional material certifications, traceability, and lot-control requirements (e.g., Medical Device Regulation [MDR], aerospace AS9100). The ECCN code EAR99 indicates standard commercial classification with no export restrictions, but medical or aerospace integration requires separate qualification activities. Contact Weidmüller's technical support to determine whether the 8013840000 has been tested or certified for these regulated markets.
• If I need to replace a failed Weidmüller 8013840000 in an older installation, what alternatives exist if the original part becomes unavailable? The Weidmüller 8013840000 is a 4-position, 2-level screw terminal block with 5.1 mm pitch and 12–26 AWG capacity. Direct mechanical and electrical equivalents include other Weidmüller W-series disconnects or competitors such as Molex, Panduit, or Lütze terminal blocks with matching pitch and wire-gauge range. Before selecting a replacement, verify (1) the connector footprint matches your PCB or panel layout, (2) the screw head size (typically Pozidriv or Phillips) is compatible with your assembly tools, and (3) the maximum voltage and current ratings meet your circuit requirements. If the exact pinout or level configuration differs, rewiring or adapter plates may be necessary. Maintain a spare stock of the 8013840000 if the installation is critical.
• What testing or validation should I perform on the Weidmüller 8013840000 after assembly to ensure connection integrity in a production environment? After inserting and tightening wires in the Weidmüller 8013840000, perform a visual inspection to confirm no bare conductor protrudes beyond the terminal body and the screw is flush against the terminal head. Conduct a pull-test by applying steady mechanical force to each wire—it should not slide or rotate within the terminal. For high-reliability applications, measure resistance across each terminal pair using a calibrated multimeter; values should remain stable (typically <0.1 Ω per connection) over successive test cycles. If intermittent opens or resistance drift occurs, re-strip and re-insert the wire. In automated production, consider automated pull-force testers or resistance-monitoring equipment to catch assembly defects early and reduce field failures.